Type A, type B, and type C lightbulbs are lasting longer today than ever before. On average, the number of bulb hours for a type C bulb is 18 times the number of bulb hours for a type B bulb. The number of bulb hours for a type A bulb is 1100 less than the type B bulb. If the total number of bulb hours for the three types of lightbulbs is 78900, find the number of bulb hours for each type.

Why do interests rates on loans to be lower in a weak economy than in a strong one

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.